Navigation Voice Control Switch

TALK Button: Activates the voice control system in the audio-navigation unit to accept voice commands.
HANG-UP/BACK Button: Returns the display to the previous screen (similar function as the CANCEL button), or is used to end a call.
PICK-UP Button: This button is used to answer incoming calls or to make outgoing calls. You can also go directly to the Phone screen by pressing this button.

Courtesy of HONDA, U.S.A., INC.